Technology Front
Industry’s smallest 15-A, multiphase DC/DC converter for personal electronics
Published: Mar 14,2014389 Read
Texas Instruments (TI) introduced the industry’s smallest 15-amp, multiphase step-down converter that meets power requirements of leading-edge quad-core processors and octa-core processors to extend battery run-time in smartphones and tablets.
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The new LP8755 achieves a 70 mm2 total solution size, and supports up to 15 A from a 2.5-V to 5-V input with 90 percent efficiency.
The LP8755 converter with integrated FETs uses two I2C interfaces to manage dynamic voltage scaling, and features an automatic phase-adding and shedding technique to maintain the highest level of efficiency across a wide output current. During light load operation, the regulator enters a low-power mode as low as 10 uA (Iq) per converter core for maximum efficiency.
Features：
－ Six High-Efficiency Step-Down DC/DC Converter Cores:
－ I2C-Compatible Interface which Supports
Standard (100 kHz), Fast (400 kHz), and High-Speed
(3.4 MHz) Modes
－ Four Pin-Selectable I2C Addresses
－ Interrupt Function with Programmable Masking
－ Output Short-Circuit and Input Over-voltage Protection
－ Spread Spectrum for EMI Reduction
－ Over-Temperature Protection (OTP)
－ Under-Voltage Lock-out (UVLO)
－ 49-Bump 0.4 mm Pitch DSBGA Package, 2.99 mm × 2.85 mm
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